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Lister purse-oyster
Isognomon radiatus
(Anton, 1839)

This bivalve shell is attached to the substrate. The shells are yellowish. The opening is irregular. Usually lives in clusters.
Size: up to 7 cm.

Attaches to rocks, wrecks and docks, but also sometimes on reefs. Anywhere where sedimentation occurs.
Depth: ranges from 3 m down to 20 m.

Occasional all over the Caribbean.

In most countries it is illegal to bring back these shells from holidays.

Lister purse-oyster (Isognomon radiatus)